Control method and apparatus for refrigeration system
US4974420A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 11, 1989 |
| Grant date | Dec 4, 1990 |
| Priority date | — |
| Expiry date | Aug 11, 2009 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25B49/027
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
In a refrigeration system including a compressor, a condenser exposed to a cooling medium for causing condensation of the refrigerant within the refrigeration system and an apparatus for controlling the flow of the cooling medium, a control method and apparatus for operating the flow control apparatus in response to suction pressure or suction temperature as sensed at the compressor. In an exemplary system utilizing air as the cooling medium and a fan for causing airflow, the fan is started after compressor start-up when sensed suction pressure rises above a predetermined amount. An additional feature includes an adaptive time limited compressor cut-out protection for low ambient temperature operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.